So unless there is some pattern where similar cards appear to be rarer or more common, or the sample size is a lot larger, brute force wont deliver definitive answers (though it is still interesting of course)
The information to review includes: Set symbol
Trading Tips and Things You Should Know Here are some things you should know about trading in Pokemon: You will only be able to rename a traded Pokemon one time
There are a couple of nice green Merfolk, though Id like to have seen a few more
However, some cards remain as sleeper agents until one archetype pops up, allowing them to reach meta status
Graveyard mechanics that let you get more use out of a card tend to be popular, and this was no exception, even if people thought the layout was a bit confusing